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ISO 4761:2022
Non-destructive testing of welds - Phased array ultrasonic testing (UT-PA) for thin-walled steel components - Acceptance levelsstandard by International Organization for Standardization, 02/01/2022
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This document specifies acceptance levels for the phased array ultrasonic testing technique (UT-PA) of full-penetration welds in low-alloy and/or fine-grained steels in the wall thickness range from 3,2mm to 8mm which correspond to the quality levels of ISO5817.
These acceptance levels are applicable to indications detected according to ISO20601.